$ git clone -n https://src.fedoraproject.org/rpms/doctest.git /var/lib/mock/f40-build-2284529-55641/root/chroot_tmpdir/scmroot/doctest
Cloning into '/var/lib/mock/f40-build-2284529-55641/root/chroot_tmpdir/scmroot/doctest'...
$ git fetch origin a29a1346cce03f023b6ea4d6daa6e7547851db27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/doctest
 * [new ref]         a29a1346cce03f023b6ea4d6daa6e7547851db27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a29a134 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild