$ git clone -n https://src.fedoraproject.org/rpms/dummy-test-package-crested.git /var/lib/mock/f38-build-side-42-init-devel-585753-26112/root/chroot_tmpdir/scmroot/dummy-test-package-crested
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-585753-26112/root/chroot_tmpdir/scmroot/dummy-test-package-crested'...
$ git fetch origin 029c30a58f950ec15dacd18e68ecf836e5493ada:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dummy-test-package-crested
 * [new ref]         029c30a58f950ec15dacd18e68ecf836e5493ada -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 029c30a Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild