$ git clone -n https://src.fedoraproject.org/rpms/kf5-kcrash.git /var/lib/mock/f40-build-787383-134746/root/chroot_tmpdir/scmroot/kf5-kcrash
Cloning into '/var/lib/mock/f40-build-787383-134746/root/chroot_tmpdir/scmroot/kf5-kcrash'...
$ git fetch origin a0907faaff12f2d4212f984d85299c0f31d7c59a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kcrash
 * [new ref]         a0907faaff12f2d4212f984d85299c0f31d7c59a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0907fa 5.115.0