$ git clone -n https://src.fedoraproject.org/rpms/rust-bincode.git /var/lib/mock/f40-build-2053773-49096/root/chroot_tmpdir/scmroot/rust-bincode
Cloning into '/var/lib/mock/f40-build-2053773-49096/root/chroot_tmpdir/scmroot/rust-bincode'...
$ git fetch origin f0a5d3eb660ae8c66644662afcad4424e1e81f03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bincode
 * [new ref]         f0a5d3eb660ae8c66644662afcad4424e1e81f03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0a5d3e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild