$ git clone -n https://src.fedoraproject.org/rpms/mingw-g2clib.git /var/lib/mock/f40-build-2201000-51797/root/chroot_tmpdir/scmroot/mingw-g2clib
Cloning into '/var/lib/mock/f40-build-2201000-51797/root/chroot_tmpdir/scmroot/mingw-g2clib'...
$ git fetch origin ea8342d6cb62b1a7f7c5d40f767712bc0dc32717:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-g2clib
 * [new ref]         ea8342d6cb62b1a7f7c5d40f767712bc0dc32717 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea8342d Rebuild (jasper)