$ git clone -n https://src.fedoraproject.org/rpms/rust-pem0.8.git /var/lib/mock/f39-build-1522242-35899/root/chroot_tmpdir/scmroot/rust-pem0.8
Cloning into '/var/lib/mock/f39-build-1522242-35899/root/chroot_tmpdir/scmroot/rust-pem0.8'...
$ git fetch origin d2d4e6c6c6c6aaa08d37a150ee8e89b168e90bf6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pem0.8
 * [new ref]         d2d4e6c6c6c6aaa08d37a150ee8e89b168e90bf6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2d4e6c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild