$ git clone -n https://src.fedoraproject.org/rpms/python-helpdev.git /var/lib/mock/f45-build-30938-648/root/chroot_tmpdir/scmroot/python-helpdev
Cloning into '/var/lib/mock/f45-build-30938-648/root/chroot_tmpdir/scmroot/python-helpdev'...
$ git fetch origin 49cb9cbae8358a45907fb6c3888d48102eab5cb9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-helpdev
 * [new ref]         49cb9cbae8358a45907fb6c3888d48102eab5cb9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49cb9cb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild