$ git clone -n https://src.fedoraproject.org/rpms/libdnf.git /var/lib/mock/f41-build-side-1-2751708-31120/root/chroot_tmpdir/scmroot/libdnf
Cloning into '/var/lib/mock/f41-build-side-1-2751708-31120/root/chroot_tmpdir/scmroot/libdnf'...
$ git fetch origin 2a14f60530574baa8ab11925364075ef4f7c42d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdnf
 * [new ref]         2a14f60530574baa8ab11925364075ef4f7c42d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a14f60 Fix release number