$ git clone -n https://src.fedoraproject.org/rpms/supermin.git /var/lib/mock/f40-build-1526381-23923/root/chroot_tmpdir/scmroot/supermin
Cloning into '/var/lib/mock/f40-build-1526381-23923/root/chroot_tmpdir/scmroot/supermin'...
$ git fetch origin 836dd0b2295cdd9c3a2744cd9e163ed2c195c466:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/supermin
 * [new ref]         836dd0b2295cdd9c3a2744cd9e163ed2c195c466 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 836dd0b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild