$ git clone -n https://src.fedoraproject.org/rpms/mbox-importer.git /var/lib/mock/f38-build-717709-96586/root/chroot_tmpdir/scmroot/mbox-importer
Cloning into '/var/lib/mock/f38-build-717709-96586/root/chroot_tmpdir/scmroot/mbox-importer'...
$ git fetch origin 0e19d36ce060d83bb2d4c1a1c7e6e4a3e0aa3883:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mbox-importer
 * [new ref]         0e19d36ce060d83bb2d4c1a1c7e6e4a3e0aa3883 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e19d36 23.04.1