$ git clone -n https://src.fedoraproject.org/rpms/kgrab.git /var/lib/mock/f40-build-797789-141532/root/chroot_tmpdir/scmroot/kgrab
Cloning into '/var/lib/mock/f40-build-797789-141532/root/chroot_tmpdir/scmroot/kgrab'...
$ git fetch origin 4224f277aa6b9c2cbe1127dd6860a1edbf6b8145:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kgrab
 * [new ref]         4224f277aa6b9c2cbe1127dd6860a1edbf6b8145 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4224f27 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild