$ git clone -n https://src.fedoraproject.org/rpms/rust-maxminddb.git /var/lib/mock/f40-build-2714271-72277/root/chroot_tmpdir/scmroot/rust-maxminddb
Cloning into '/var/lib/mock/f40-build-2714271-72277/root/chroot_tmpdir/scmroot/rust-maxminddb'...
$ git fetch origin aff20eb28abc251af56eb2777eb5a6e0bcb8de74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-maxminddb
 * [new ref]         aff20eb28abc251af56eb2777eb5a6e0bcb8de74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aff20eb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild