$ git clone -n https://src.fedoraproject.org/rpms/snapd.git /var/lib/mock/f41-build-1206513-22487/root/chroot_tmpdir/scmroot/snapd
Cloning into '/var/lib/mock/f41-build-1206513-22487/root/chroot_tmpdir/scmroot/snapd'...
$ git fetch origin c18e5e17bcc17ee6b4711886e6a785c9c8f58292:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/snapd
 * [new ref]         c18e5e17bcc17ee6b4711886e6a785c9c8f58292 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c18e5e1 Update to 2.63