$ git clone -n https://src.fedoraproject.org/rpms/cwm.git /var/lib/mock/f45-build-7445-364/root/chroot_tmpdir/scmroot/cwm
Cloning into '/var/lib/mock/f45-build-7445-364/root/chroot_tmpdir/scmroot/cwm'...
$ git fetch origin d84a8db429ccdcf1b4c4ffe2d74e696e80dd2f15:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cwm
 * [new ref]         d84a8db429ccdcf1b4c4ffe2d74e696e80dd2f15 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d84a8db Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild