$ git clone -n https://src.fedoraproject.org/rpms/golang-github-emersion-sasl.git /var/lib/mock/f40-build-2000273-44444/root/chroot_tmpdir/scmroot/golang-github-emersion-sasl
Cloning into '/var/lib/mock/f40-build-2000273-44444/root/chroot_tmpdir/scmroot/golang-github-emersion-sasl'...
$ git fetch origin 6b6b43b91f4e6883c47bbffe3506bd849963512d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-emersion-sasl
 * [new ref]         6b6b43b91f4e6883c47bbffe3506bd849963512d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b6b43b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild