$ git clone -n https://src.fedoraproject.org/rpms/golang-github-pquerna-ffjson.git /var/lib/mock/f40-build-781805-131860/root/chroot_tmpdir/scmroot/golang-github-pquerna-ffjson
Cloning into '/var/lib/mock/f40-build-781805-131860/root/chroot_tmpdir/scmroot/golang-github-pquerna-ffjson'...
$ git fetch origin b3147cad6bea38cba603d41fca8e579d83273008:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-pquerna-ffjson
 * [new ref]         b3147cad6bea38cba603d41fca8e579d83273008 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3147ca Rebuild for golang 1.22.0