$ git clone -n https://src.fedoraproject.org/rpms/nv-codec-headers.git /var/lib/mock/f42-build-3280209-41340/root/chroot_tmpdir/scmroot/nv-codec-headers
Cloning into '/var/lib/mock/f42-build-3280209-41340/root/chroot_tmpdir/scmroot/nv-codec-headers'...
$ git fetch origin c8a23e954e980d3d3520c32a207c8f0788b57c72:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nv-codec-headers
 * [new ref]         c8a23e954e980d3d3520c32a207c8f0788b57c72 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8a23e9 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild