$ git clone -n https://src.fedoraproject.org/rpms/disomaster.git /var/lib/mock/f41-build-841739-161398/root/chroot_tmpdir/scmroot/disomaster
Cloning into '/var/lib/mock/f41-build-841739-161398/root/chroot_tmpdir/scmroot/disomaster'...
$ git fetch origin 0737d8f8fffd4d9bf8bb3260f9cccdab11abd385:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/disomaster
 * [new ref]         0737d8f8fffd4d9bf8bb3260f9cccdab11abd385 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0737d8f 5.0.8