$ git clone -n https://src.fedoraproject.org/rpms/rust-log.git /var/lib/mock/f45-build-43011-799/root/chroot_tmpdir/scmroot/rust-log
Cloning into '/var/lib/mock/f45-build-43011-799/root/chroot_tmpdir/scmroot/rust-log'...
$ git fetch origin ea06e56a2cdd9a89c243a040653287113b7fde14:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-log
 * [new ref]         ea06e56a2cdd9a89c243a040653287113b7fde14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea06e56 Update to version 0.4.34; Fixes RHBZ#2521315