$ git clone -n https://src.fedoraproject.org/rpms/scala.git /var/lib/mock/f40-build-2234658-53405/root/chroot_tmpdir/scmroot/scala
Cloning into '/var/lib/mock/f40-build-2234658-53405/root/chroot_tmpdir/scmroot/scala'...
$ git fetch origin 09b86f02cd20fe963a05377fb379e1cdd6a96103:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scala
 * [new ref]         09b86f02cd20fe963a05377fb379e1cdd6a96103 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 09b86f0 Removed Scaladoc to temporary fix webjar error