$ git clone -n https://src.fedoraproject.org/rpms/knot-resolver.git /var/lib/mock/f41-build-854861-166994/root/chroot_tmpdir/scmroot/knot-resolver
Cloning into '/var/lib/mock/f41-build-854861-166994/root/chroot_tmpdir/scmroot/knot-resolver'...
$ git fetch origin a8390cd29f8effafa83bb3d51c3cd47bf97634ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/knot-resolver
 * [new ref]         a8390cd29f8effafa83bb3d51c3cd47bf97634ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8390cd Release 5.7.4-1