$ git clone -n https://src.fedoraproject.org/rpms/CriticalMass.git /var/lib/mock/f39-build-1591867-38301/root/chroot_tmpdir/scmroot/CriticalMass
Cloning into '/var/lib/mock/f39-build-1591867-38301/root/chroot_tmpdir/scmroot/CriticalMass'...
$ git fetch origin 09e6b6736a49d215d639f64f132d0046c9fcafa1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/CriticalMass
 * [new ref]         09e6b6736a49d215d639f64f132d0046c9fcafa1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09e6b67 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild