$ git clone -n https://src.fedoraproject.org/rpms/golang-github-armon-circbuf.git /var/lib/mock/f40-build-2593611-62720/root/chroot_tmpdir/scmroot/golang-github-armon-circbuf
Cloning into '/var/lib/mock/f40-build-2593611-62720/root/chroot_tmpdir/scmroot/golang-github-armon-circbuf'...
$ git fetch origin f0f154b7709d5d4f00bf9af55502e1135132f8a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-armon-circbuf
 * [new ref]         f0f154b7709d5d4f00bf9af55502e1135132f8a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0f154b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild