$ git clone -n https://src.fedoraproject.org/rpms/libnxt.git /var/lib/mock/f42-build-3273283-41310/root/chroot_tmpdir/scmroot/libnxt
Cloning into '/var/lib/mock/f42-build-3273283-41310/root/chroot_tmpdir/scmroot/libnxt'...
$ git fetch origin 3ece63001d101e091c8d6810a47239df62ea2c2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libnxt
 * [new ref]         3ece63001d101e091c8d6810a47239df62ea2c2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ece630 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild