$ git clone -n https://src.fedoraproject.org/rpms/rust-async-session.git /var/lib/mock/f39-build-1543793-36587/root/chroot_tmpdir/scmroot/rust-async-session
Cloning into '/var/lib/mock/f39-build-1543793-36587/root/chroot_tmpdir/scmroot/rust-async-session'...
$ git fetch origin 0b30e0ab2f0a6ddbc1071494e1d8e958e7110b7c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-session
 * [new ref]         0b30e0ab2f0a6ddbc1071494e1d8e958e7110b7c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b30e0a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild