$ git clone -n https://src.fedoraproject.org/rpms/rust-test-log-macros.git /var/lib/mock/f45-build-45394-822/root/chroot_tmpdir/scmroot/rust-test-log-macros
Cloning into '/var/lib/mock/f45-build-45394-822/root/chroot_tmpdir/scmroot/rust-test-log-macros'...
$ git fetch origin eac7696eee8850d1b2ff12027ec05d6cfdd5a9d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-test-log-macros
 * [new ref]         eac7696eee8850d1b2ff12027ec05d6cfdd5a9d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eac7696 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild