$ git clone -n https://src.fedoraproject.org/rpms/knot-resolver.git /var/lib/mock/f40-build-1776975-24802/root/chroot_tmpdir/scmroot/knot-resolver
Cloning into '/var/lib/mock/f40-build-1776975-24802/root/chroot_tmpdir/scmroot/knot-resolver'...
$ git fetch origin c304bd30a25d716a318d88f15bef6ff53fa2e22a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/knot-resolver
 * [new ref]         c304bd30a25d716a318d88f15bef6ff53fa2e22a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c304bd3 Release 5.7.4-1