$ git clone -n https://src.fedoraproject.org/rpms/golang-x-arch.git /var/lib/mock/f40-build-2583150-62399/root/chroot_tmpdir/scmroot/golang-x-arch
Cloning into '/var/lib/mock/f40-build-2583150-62399/root/chroot_tmpdir/scmroot/golang-x-arch'...
$ git fetch origin 142aa003f1dee80ef1a31124d27e60aeedd09031:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-x-arch
 * [new ref]         142aa003f1dee80ef1a31124d27e60aeedd09031 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 142aa00 [packit] 0.7.0 upstream release