diff --git a/src/Commands/Clone.cs b/src/Commands/Clone.cs
index a6bfe11f..9a37aa2e 100644
--- a/src/Commands/Clone.cs
+++ b/src/Commands/Clone.cs
@@ -14,7 +14,7 @@ namespace SourceGit.Commands {
             handler = outputHandler;
 
             if (!string.IsNullOrEmpty(sshKey)) {
-                Environment.SetEnvironmentVariable("GIT_SSH_COMMAND", $"ssh -i '{sshKey}'");
+                Envs.Add("GIT_SSH_COMMAND", $"ssh -i '{sshKey}'");
                 Args = "";
             } else {
                 Args = "-c credential.helper=manager ";
diff --git a/src/Commands/Command.cs b/src/Commands/Command.cs
index 34115b4d..2228727f 100644
--- a/src/Commands/Command.cs
+++ b/src/Commands/Command.cs
@@ -52,6 +52,11 @@ namespace SourceGit.Commands {
         /// </summary>
         public bool TraitErrorAsOutput { get; set; } = false;
 
+        /// <summary>
+        ///     用于设置该进程独有的环境变量
+        /// </summary>
+        public Dictionary<string, string> Envs { get; set; } = new Dictionary<string, string>();
+
         /// <summary>
         ///     运行
         /// </summary>
@@ -68,6 +73,8 @@ namespace SourceGit.Commands {
 
             if (!string.IsNullOrEmpty(Cwd)) start.WorkingDirectory = Cwd;
 
+            foreach (var kv in Envs) start.EnvironmentVariables[kv.Key] = kv.Value;
+
             var progressFilter = new Regex(@"\s\d+%\s");
             var errs = new List<string>();
             var proc = new Process() { StartInfo = start };
diff --git a/src/Commands/Fetch.cs b/src/Commands/Fetch.cs
index c30787c7..f45495fb 100644
--- a/src/Commands/Fetch.cs
+++ b/src/Commands/Fetch.cs
@@ -16,7 +16,7 @@ namespace SourceGit.Commands {
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
             if (!string.IsNullOrEmpty(sshKey)) {
-                Environment.SetEnvironmentVariable("GIT_SSH_COMMAND", $"ssh -i '{sshKey}'");
+                Envs.Add("GIT_SSH_COMMAND", $"ssh -i '{sshKey}'");
                 Args = "";
             } else {
                 Args = "-c credential.helper=manager ";
diff --git a/src/Commands/Pull.cs b/src/Commands/Pull.cs
index f525a20f..af6bca05 100644
--- a/src/Commands/Pull.cs
+++ b/src/Commands/Pull.cs
@@ -16,7 +16,7 @@ namespace SourceGit.Commands {
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
             if (!string.IsNullOrEmpty(sshKey)) {
-                Environment.SetEnvironmentVariable("GIT_SSH_COMMAND", $"ssh -i '{sshKey}'");
+                Envs.Add("GIT_SSH_COMMAND", $"ssh -i '{sshKey}'");
                 Args = "";
             } else {
                 Args = "-c credential.helper=manager ";
diff --git a/src/Commands/Push.cs b/src/Commands/Push.cs
index 2742b564..211c7c27 100644
--- a/src/Commands/Push.cs
+++ b/src/Commands/Push.cs
@@ -14,7 +14,7 @@ namespace SourceGit.Commands {
 
             var sshKey = new Config(repo).Get($"remote.{remote}.sshkey");
             if (!string.IsNullOrEmpty(sshKey)) {
-                Environment.SetEnvironmentVariable("GIT_SSH_COMMAND", $"ssh -i '{sshKey}'");
+                Envs.Add("GIT_SSH_COMMAND", $"ssh -i '{sshKey}'");
                 Args = "";
             } else {
                 Args = "-c credential.helper=manager ";