$ git clone -n https://src.fedoraproject.org/rpms/sfxr.git /var/lib/mock/f45-build-35848-699/root/chroot_tmpdir/scmroot/sfxr
Cloning into '/var/lib/mock/f45-build-35848-699/root/chroot_tmpdir/scmroot/sfxr'...
$ git fetch origin dfeacd73b32004d6958c5f4c1873a61be14da93b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sfxr
 * [new ref]         dfeacd73b32004d6958c5f4c1873a61be14da93b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dfeacd7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild