$ git clone -n https://src.fedoraproject.org/rpms/whichwayisup.git /var/lib/mock/f45-build-38359-723/root/chroot_tmpdir/scmroot/whichwayisup
Cloning into '/var/lib/mock/f45-build-38359-723/root/chroot_tmpdir/scmroot/whichwayisup'...
$ git fetch origin a7b605b3af1c2a28ffb2c97e6a48ac316c1f2506:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/whichwayisup
 * [new ref]         a7b605b3af1c2a28ffb2c97e6a48ac316c1f2506 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7b605b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild