$ git clone -n https://src.fedoraproject.org/rpms/rust-thiserror1.git /var/lib/mock/f45-build-45472-823/root/chroot_tmpdir/scmroot/rust-thiserror1
Cloning into '/var/lib/mock/f45-build-45472-823/root/chroot_tmpdir/scmroot/rust-thiserror1'...
$ git fetch origin ea5c2029e187d7704b29c2a5f4412dadc8534d2a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-thiserror1
 * [new ref]         ea5c2029e187d7704b29c2a5f4412dadc8534d2a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea5c202 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild