$ git clone -n https://src.fedoraproject.org/rpms/setserial.git /var/lib/mock/f45-build-35777-699/root/chroot_tmpdir/scmroot/setserial
Cloning into '/var/lib/mock/f45-build-35777-699/root/chroot_tmpdir/scmroot/setserial'...
$ git fetch origin a65c0ff42fff950a3903ba615d199dc8d27ccea1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/setserial
 * [new ref]         a65c0ff42fff950a3903ba615d199dc8d27ccea1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a65c0ff Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild