$ git clone -n https://src.fedoraproject.org/rpms/gimp.git /var/lib/mock/f41-build-808034-145625/root/chroot_tmpdir/scmroot/gimp
Cloning into '/var/lib/mock/f41-build-808034-145625/root/chroot_tmpdir/scmroot/gimp'...
$ git fetch origin fe97b00b0a3a31e9937d47a0deb19d7652d7a576:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gimp
 * [new ref]         fe97b00b0a3a31e9937d47a0deb19d7652d7a576 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe97b00 Update to version 2.10.38