$ git clone -n https://src.fedoraproject.org/rpms/h3.git /var/lib/mock/f45-build-13292-448/root/chroot_tmpdir/scmroot/h3
Cloning into '/var/lib/mock/f45-build-13292-448/root/chroot_tmpdir/scmroot/h3'...
$ git fetch origin 63032c696fceed20404b19771aaaadb224ad7244:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/h3
 * [new ref]         63032c696fceed20404b19771aaaadb224ad7244 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63032c6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild