$ git clone -n https://src.fedoraproject.org/rpms/libyaml.git /var/lib/mock/f41-build-832293-14884/root/chroot_tmpdir/scmroot/libyaml
Cloning into '/var/lib/mock/f41-build-832293-14884/root/chroot_tmpdir/scmroot/libyaml'...
$ git fetch origin f1ba5cdc1dbc09610e47aad31799557f13d99d3c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libyaml
 * [new ref]         f1ba5cdc1dbc09610e47aad31799557f13d99d3c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f1ba5cd Import CI tests from RHEL