[PATCH v2 1/3] binman: build_from_git: Add argument specifying branch

[Leonard Anderweit <l.anderweit@phytec.de>]

Add optional argument git_branch to build_from_git. The new argument
allows specifying which branch of the repo to use.

Signed-off-by: Leonard Anderweit <l.anderweit@phytec.de>
---
 tools/binman/bintool.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/binman/bintool.py b/tools/binman/bintool.py
index 3c4ad1adbb9e..7280ee4f8cd9 100644
--- a/tools/binman/bintool.py
+++ b/tools/binman/bintool.py
@@ -328,7 +328,8 @@ class Bintool:
             return result.stdout
 
     @classmethod
-    def build_from_git(cls, git_repo, make_targets, bintool_path, flags=None):
+    def build_from_git(cls, git_repo, make_targets, bintool_path,
+            flags=None, git_branch=None):
         """Build a bintool from a git repo
 
         This clones the repo in a temporary directory, builds it with 'make',
@@ -341,6 +342,7 @@ class Bintool:
             bintool_path (str): Relative path of the tool in the repo, after
                 build is complete
             flags (list of str): Flags or variables to pass to make, or None
+            git_branch (str): Branch of git repo, or None to use the default
 
         Returns:
             tuple:
@@ -350,7 +352,11 @@ class Bintool:
         """
         tmpdir = tempfile.mkdtemp(prefix='binmanf.')
         print(f"- clone git repo '{git_repo}' to '{tmpdir}'")
-        tools.run('git', 'clone', '--depth', '1', git_repo, tmpdir)
+        if git_branch:
+            tools.run('git', 'clone', '--depth', '1', '--branch', git_branch,
+                      git_repo, tmpdir)
+        else:
+            tools.run('git', 'clone', '--depth', '1', git_repo, tmpdir)
         for target in make_targets:
             print(f"- build target '{target}'")
             cmd = ['make', '-C', tmpdir, '-j', f'{multiprocessing.cpu_count()}',
-- 
2.34.1