$ git clone -n https://src.fedoraproject.org/rpms/dosbox-staging.git /var/lib/mock/f38-build-side-42-init-devel-846372-28422/root/chroot_tmpdir/scmroot/dosbox-staging
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-846372-28422/root/chroot_tmpdir/scmroot/dosbox-staging'...
$ git fetch origin fac68288b28c62f97693539d8fb876a0478946e4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dosbox-staging
 * [new ref]         fac68288b28c62f97693539d8fb876a0478946e4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fac6828 Add missing Requires for minimal environments (rhbz#2176658)