$ git clone -n https://src.fedoraproject.org/rpms/R-BiocGenerics.git /var/lib/mock/f39-build-1470439-33896/root/chroot_tmpdir/scmroot/R-BiocGenerics
Cloning into '/var/lib/mock/f39-build-1470439-33896/root/chroot_tmpdir/scmroot/R-BiocGenerics'...
$ git fetch origin 8079af54a0e380f036c23cd1667b43eedfb6fa07:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-BiocGenerics
 * [new ref]         8079af54a0e380f036c23cd1667b43eedfb6fa07 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8079af5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild