$ git clone -n https://src.fedoraproject.org/rpms/golang-github-pkg-errors.git /var/lib/mock/f38-build-side-42-init-devel-607642-26254/root/chroot_tmpdir/scmroot/golang-github-pkg-errors
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-607642-26254/root/chroot_tmpdir/scmroot/golang-github-pkg-errors'...
$ git fetch origin f567195862922d746a0b06e3e99ecd73b77b723d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-pkg-errors
 * [new ref]         f567195862922d746a0b06e3e99ecd73b77b723d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f567195 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild