$ git clone -n https://src.fedoraproject.org/rpms/avgtime.git /var/lib/mock/f38-build-side-42-init-devel-1328757-30692/root/chroot_tmpdir/scmroot/avgtime
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1328757-30692/root/chroot_tmpdir/scmroot/avgtime'...
$ git fetch origin cab75737836596dd02bf13cd63a2cfef2ea52b86:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/avgtime
 * [new ref]         cab75737836596dd02bf13cd63a2cfef2ea52b86 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cab7573 Rebuilt for ldc 1.32