$ git clone -n https://src.fedoraproject.org/rpms/ghc-glib.git /var/lib/mock/f38-build-side-42-init-devel-890480-28529/root/chroot_tmpdir/scmroot/ghc-glib
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-890480-28529/root/chroot_tmpdir/scmroot/ghc-glib'...
$ git fetch origin d5fc09fabc8f1c7538a67c5966b34111c42d8297:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-glib
 * [new ref]         d5fc09fabc8f1c7538a67c5966b34111c42d8297 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d5fc09f Convert to %autorelease and %autochangelog