$ git clone -n https://src.fedoraproject.org/rpms/rust-tracing-serde.git /var/lib/mock/f45-build-45603-824/root/chroot_tmpdir/scmroot/rust-tracing-serde
Cloning into '/var/lib/mock/f45-build-45603-824/root/chroot_tmpdir/scmroot/rust-tracing-serde'...
$ git fetch origin 93e01e74584280397e0a99bc7329f62e05e8dd60:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tracing-serde
 * [new ref]         93e01e74584280397e0a99bc7329f62e05e8dd60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 93e01e7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild