$ git clone -n https://src.fedoraproject.org/rpms/rust-synstructure.git /var/lib/mock/f45-build-45319-822/root/chroot_tmpdir/scmroot/rust-synstructure
Cloning into '/var/lib/mock/f45-build-45319-822/root/chroot_tmpdir/scmroot/rust-synstructure'...
$ git fetch origin 2f27542ccbb003dd265f993739129cf24780836d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-synstructure
 * [new ref]         2f27542ccbb003dd265f993739129cf24780836d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f27542 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild