$ git clone -n https://src.fedoraproject.org/rpms/pam-kwallet.git /var/lib/mock/f42-build-side-1-3569506-46747/root/chroot_tmpdir/scmroot/pam-kwallet
Cloning into '/var/lib/mock/f42-build-side-1-3569506-46747/root/chroot_tmpdir/scmroot/pam-kwallet'...
$ git fetch origin 267531410868a7ee372317b3474de99ada9b336c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pam-kwallet
 * [new ref]         267531410868a7ee372317b3474de99ada9b336c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2675314 6.4.0