$ git clone -n https://src.fedoraproject.org/rpms/gfal2-python.git /var/lib/mock/f41-build-side-2-python-2704249-30406/root/chroot_tmpdir/scmroot/gfal2-python
Cloning into '/var/lib/mock/f41-build-side-2-python-2704249-30406/root/chroot_tmpdir/scmroot/gfal2-python'...
$ git fetch origin 5cec02f5b9ccd6be20b34d87859bfe57431cd720:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gfal2-python
 * [new ref]         5cec02f5b9ccd6be20b34d87859bfe57431cd720 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5cec02f Add "python3" to the BuildRequires list