$ git clone -n https://src.fedoraproject.org/rpms/python-single-version.git /var/lib/mock/f45-build-32971-665/root/chroot_tmpdir/scmroot/python-single-version
Cloning into '/var/lib/mock/f45-build-32971-665/root/chroot_tmpdir/scmroot/python-single-version'...
$ git fetch origin c0c3147431363ddf51b5995afa75a0c47986c112:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-single-version
 * [new ref]         c0c3147431363ddf51b5995afa75a0c47986c112 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c0c3147 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild