$ git clone -n https://src.fedoraproject.org/rpms/rust-chrono-tz.git /var/lib/mock/f45-build-40795-776/root/chroot_tmpdir/scmroot/rust-chrono-tz
Cloning into '/var/lib/mock/f45-build-40795-776/root/chroot_tmpdir/scmroot/rust-chrono-tz'...
$ git fetch origin 5e97d8639bbe3876a6b7183265e65d20213c2761:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-chrono-tz
 * [new ref]         5e97d8639bbe3876a6b7183265e65d20213c2761 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e97d86 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild