$ git clone -n https://src.fedoraproject.org/rpms/golang-x-arch.git /var/lib/mock/f42-build-3409174-45146/root/chroot_tmpdir/scmroot/golang-x-arch
Cloning into '/var/lib/mock/f42-build-3409174-45146/root/chroot_tmpdir/scmroot/golang-x-arch'...
$ git fetch origin 301e0f2a9a7c60fe867d0a3ca02b9a1a134c405e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-x-arch
 * [new ref]         301e0f2a9a7c60fe867d0a3ca02b9a1a134c405e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 301e0f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild