$ git clone -n https://src.fedoraproject.org/rpms/python-mediafile.git /var/lib/mock/f45-build-31510-652/root/chroot_tmpdir/scmroot/python-mediafile
Cloning into '/var/lib/mock/f45-build-31510-652/root/chroot_tmpdir/scmroot/python-mediafile'...
$ git fetch origin cc8a32076fb7cc5443a873f3bd98c99ec5601e37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mediafile
 * [new ref]         cc8a32076fb7cc5443a873f3bd98c99ec5601e37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc8a320 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild