$ git clone -n https://src.fedoraproject.org/rpms/python-hamcrest.git /var/lib/mock/f45-build-30911-648/root/chroot_tmpdir/scmroot/python-hamcrest
Cloning into '/var/lib/mock/f45-build-30911-648/root/chroot_tmpdir/scmroot/python-hamcrest'...
$ git fetch origin 6567d96fb5c7a4de42d3dba1ae5c2a4282c2b7f4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-hamcrest
 * [new ref]         6567d96fb5c7a4de42d3dba1ae5c2a4282c2b7f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6567d96 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild