$ git clone -n https://src.fedoraproject.org/rpms/stack.git /var/lib/mock/f42-build-3234202-41196/root/chroot_tmpdir/scmroot/stack
Cloning into '/var/lib/mock/f42-build-3234202-41196/root/chroot_tmpdir/scmroot/stack'...
$ git fetch origin 95895a7ca5098a25d64371679bfa7e1cc767f3df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stack
 * [new ref]         95895a7ca5098a25d64371679bfa7e1cc767f3df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 95895a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild