$ git clone -n https://src.fedoraproject.org/rpms/mom.git /var/lib/mock/f39-build-1578076-37988/root/chroot_tmpdir/scmroot/mom
Cloning into '/var/lib/mock/f39-build-1578076-37988/root/chroot_tmpdir/scmroot/mom'...
$ git fetch origin 2092b139165781c774c2b1792d973391ccc477c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mom
 * [new ref]         2092b139165781c774c2b1792d973391ccc477c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2092b13 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild