$ git clone -n https://src.fedoraproject.org/rpms/python-mujson.git /var/lib/mock/f45-build-31597-654/root/chroot_tmpdir/scmroot/python-mujson
Cloning into '/var/lib/mock/f45-build-31597-654/root/chroot_tmpdir/scmroot/python-mujson'...
$ git fetch origin 1f740224dee7514cd3a6b2da159860b16ef746dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mujson
 * [new ref]         1f740224dee7514cd3a6b2da159860b16ef746dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f74022 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild