$ git clone -n https://src.fedoraproject.org/rpms/rust-signal-hook-mio.git /var/lib/mock/f38-build-side-43-rust-devel-1415512-31454/root/chroot_tmpdir/scmroot/rust-signal-hook-mio
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1415512-31454/root/chroot_tmpdir/scmroot/rust-signal-hook-mio'...
$ git fetch origin 3e39bcdf42f1d79e0a3ce50b4e00d900f5638b2c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-signal-hook-mio
 * [new ref]         3e39bcdf42f1d79e0a3ce50b4e00d900f5638b2c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e39bcd Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild