$ git clone -n https://src.fedoraproject.org/rpms/docker-distribution.git /var/lib/mock/f41-build-3152126-40629/root/chroot_tmpdir/scmroot/docker-distribution
Cloning into '/var/lib/mock/f41-build-3152126-40629/root/chroot_tmpdir/scmroot/docker-distribution'...
$ git fetch origin 3513fd29429066747565b9b23e7b031a6d3a7ab0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/docker-distribution
 * [new ref]         3513fd29429066747565b9b23e7b031a6d3a7ab0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3513fd2 convert ASL 2.0 license to SPDX