$ git clone -n https://src.fedoraproject.org/rpms/kommit.git /var/lib/mock/f40-build-2146749-50889/root/chroot_tmpdir/scmroot/kommit
Cloning into '/var/lib/mock/f40-build-2146749-50889/root/chroot_tmpdir/scmroot/kommit'...
$ git fetch origin 26d68ce440abe893ac148b16b414a17d83029256:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kommit
 * [new ref]         26d68ce440abe893ac148b16b414a17d83029256 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26d68ce Rebuild for new dolphin libs.