$ git clone -n https://src.fedoraproject.org/rpms/rust-maxminddb.git /var/lib/mock/f39-build-1538316-36391/root/chroot_tmpdir/scmroot/rust-maxminddb
Cloning into '/var/lib/mock/f39-build-1538316-36391/root/chroot_tmpdir/scmroot/rust-maxminddb'...
$ git fetch origin e1110789758a2e211104b19b3635d42ed52b1fd4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-maxminddb
 * [new ref]         e1110789758a2e211104b19b3635d42ed52b1fd4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e111078 Update to version 0.23.0; Fixes RHBZ#1887092