$ git clone -n https://src.fedoraproject.org/rpms/rust-smallstr.git /var/lib/mock/f40-build-2716741-72676/root/chroot_tmpdir/scmroot/rust-smallstr
Cloning into '/var/lib/mock/f40-build-2716741-72676/root/chroot_tmpdir/scmroot/rust-smallstr'...
$ git fetch origin 0bd7861f2bc4663aa928b21091e5fa8d6e61b3a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-smallstr
 * [new ref]         0bd7861f2bc4663aa928b21091e5fa8d6e61b3a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0bd7861 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild