$ git clone -n https://src.fedoraproject.org/rpms/wmdocker.git /var/lib/mock/f45-build-38455-724/root/chroot_tmpdir/scmroot/wmdocker
Cloning into '/var/lib/mock/f45-build-38455-724/root/chroot_tmpdir/scmroot/wmdocker'...
$ git fetch origin 5cac74482fb150d5491379e810e5034ad1b71f42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wmdocker
 * [new ref]         5cac74482fb150d5491379e810e5034ad1b71f42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5cac744 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild