$ git clone -n https://src.fedoraproject.org/rpms/kf5-kimageformats.git /var/lib/mock/f45-build-14854-464/root/chroot_tmpdir/scmroot/kf5-kimageformats
Cloning into '/var/lib/mock/f45-build-14854-464/root/chroot_tmpdir/scmroot/kf5-kimageformats'...
$ git fetch origin 3438d57a7aeb4aa897ea5fa78e45bbcca9f5e42b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kimageformats
 * [new ref]         3438d57a7aeb4aa897ea5fa78e45bbcca9f5e42b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3438d57 Rebuilt for updated dependencies