$ git clone -n https://src.fedoraproject.org/rpms/gst-devtools.git /var/lib/mock/f45-build-39680-750/root/chroot_tmpdir/scmroot/gst-devtools
Cloning into '/var/lib/mock/f45-build-39680-750/root/chroot_tmpdir/scmroot/gst-devtools'...
$ git fetch origin 8c4a58d3637f2c6949a66fecd0cf5a96e6b93f37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gst-devtools
 * [new ref]         8c4a58d3637f2c6949a66fecd0cf5a96e6b93f37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c4a58d 1.28.7