$ git clone -n https://src.fedoraproject.org/rpms/sameboy.git /var/lib/mock/f45-build-35563-696/root/chroot_tmpdir/scmroot/sameboy
Cloning into '/var/lib/mock/f45-build-35563-696/root/chroot_tmpdir/scmroot/sameboy'...
$ git fetch origin 334ad754ab281f2b0f573c86f2377544cd1ce44c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sameboy
 * [new ref]         334ad754ab281f2b0f573c86f2377544cd1ce44c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 334ad75 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild