$ git clone -n https://src.fedoraproject.org/rpms/rubygem-locale.git /var/lib/mock/f39-build-1499350-34744/root/chroot_tmpdir/scmroot/rubygem-locale
Cloning into '/var/lib/mock/f39-build-1499350-34744/root/chroot_tmpdir/scmroot/rubygem-locale'...
$ git fetch origin d4c038e288ebfcc8ad3568d84c7ea9601c0a4ea0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-locale
 * [new ref]         d4c038e288ebfcc8ad3568d84c7ea9601c0a4ea0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4c038e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild