$ git clone -n https://src.fedoraproject.org/rpms/libdstr.git /var/lib/mock/f40-build-2603507-63334/root/chroot_tmpdir/scmroot/libdstr
Cloning into '/var/lib/mock/f40-build-2603507-63334/root/chroot_tmpdir/scmroot/libdstr'...
$ git fetch origin 7ed6471e7baa4694ccdfb5ed805416a7f837ce9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdstr
 * [new ref]         7ed6471e7baa4694ccdfb5ed805416a7f837ce9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ed6471 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild