$ git clone -n https://src.fedoraproject.org/rpms/gtk-sharp2.git /var/lib/mock/f41-build-2629637-25588/root/chroot_tmpdir/scmroot/gtk-sharp2
Cloning into '/var/lib/mock/f41-build-2629637-25588/root/chroot_tmpdir/scmroot/gtk-sharp2'...
$ git fetch origin 9e640373d6669066739f1928d5488611a48aab67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk-sharp2
 * [new ref]         9e640373d6669066739f1928d5488611a48aab67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e64037 convert license to SPDX