$ git clone -n https://src.fedoraproject.org/rpms/osbuild-composer.git /var/lib/mock/f41-build-853483-166716/root/chroot_tmpdir/scmroot/osbuild-composer
Cloning into '/var/lib/mock/f41-build-853483-166716/root/chroot_tmpdir/scmroot/osbuild-composer'...
$ git fetch origin 9051567af866d1ba9a291fa4421988a77f7632af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/osbuild-composer
 * [new ref]         9051567af866d1ba9a291fa4421988a77f7632af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9051567 Update to 121 upstream release