$ git clone -n https://src.fedoraproject.org/rpms/pyelftools.git /var/lib/mock/f45-build-29117-635/root/chroot_tmpdir/scmroot/pyelftools
Cloning into '/var/lib/mock/f45-build-29117-635/root/chroot_tmpdir/scmroot/pyelftools'...
$ git fetch origin c9b802f40fb7fdeea2420089f5cb50aa38eebfe5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pyelftools
 * [new ref]         c9b802f40fb7fdeea2420089f5cb50aa38eebfe5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c9b802f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild