$ git clone -n https://src.fedoraproject.org/rpms/R-acepack.git /var/lib/mock/f39-build-1470420-33894/root/chroot_tmpdir/scmroot/R-acepack
Cloning into '/var/lib/mock/f39-build-1470420-33894/root/chroot_tmpdir/scmroot/R-acepack'...
$ git fetch origin 87dba007df60d362d39170788f56020f4ed74b05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-acepack
 * [new ref]         87dba007df60d362d39170788f56020f4ed74b05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87dba00 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild