$ git clone -n https://src.fedoraproject.org/rpms/vkeybd.git /var/lib/mock/f45-build-38108-720/root/chroot_tmpdir/scmroot/vkeybd
Cloning into '/var/lib/mock/f45-build-38108-720/root/chroot_tmpdir/scmroot/vkeybd'...
$ git fetch origin c3ff756c68a916b2994c35350c6b7278847a07f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vkeybd
 * [new ref]         c3ff756c68a916b2994c35350c6b7278847a07f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3ff756 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild