$ git clone -n https://src.fedoraproject.org/rpms/fmt.git /var/lib/mock/f45-build-9119-399/root/chroot_tmpdir/scmroot/fmt
Cloning into '/var/lib/mock/f45-build-9119-399/root/chroot_tmpdir/scmroot/fmt'...
$ git fetch origin afe9f0d365275686ef0f08f9764db0c54e893b74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fmt
 * [new ref]         afe9f0d365275686ef0f08f9764db0c54e893b74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at afe9f0d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild