$ git clone -n https://src.fedoraproject.org/rpms/rbanffy-3270-fonts.git /var/lib/mock/f45-build-34342-684/root/chroot_tmpdir/scmroot/rbanffy-3270-fonts
Cloning into '/var/lib/mock/f45-build-34342-684/root/chroot_tmpdir/scmroot/rbanffy-3270-fonts'...
$ git fetch origin a8e615dab36b8a92e53b4c5f5445499cd8dbd699:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rbanffy-3270-fonts
 * [new ref]         a8e615dab36b8a92e53b4c5f5445499cd8dbd699 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8e615d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild