$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-loops.git /var/lib/mock/f38-build-side-42-init-devel-641216-26392/root/chroot_tmpdir/scmroot/gap-pkg-loops
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-641216-26392/root/chroot_tmpdir/scmroot/gap-pkg-loops'...
$ git fetch origin 18cd8bd6fa147a6959ddec1b34e96644144d7796:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-loops
 * [new ref]         18cd8bd6fa147a6959ddec1b34e96644144d7796 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 18cd8bd Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild