$ git clone -n https://src.fedoraproject.org/rpms/create-fake-rpm.git /var/lib/mock/f39-build-1531338-36212/root/chroot_tmpdir/scmroot/create-fake-rpm
Cloning into '/var/lib/mock/f39-build-1531338-36212/root/chroot_tmpdir/scmroot/create-fake-rpm'...
$ git fetch origin dd5223d8fb1276becd09c41cd802007fe2119e11:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/create-fake-rpm
 * [new ref]         dd5223d8fb1276becd09c41cd802007fe2119e11 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd5223d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild