$ git clone -n https://src.fedoraproject.org/rpms/xmakemol.git /var/lib/mock/f45-build-38934-730/root/chroot_tmpdir/scmroot/xmakemol
Cloning into '/var/lib/mock/f45-build-38934-730/root/chroot_tmpdir/scmroot/xmakemol'...
$ git fetch origin fb3fa13946b8d0a89e3afba4c16d0cd9b6521524:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmakemol
 * [new ref]         fb3fa13946b8d0a89e3afba4c16d0cd9b6521524 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb3fa13 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild