$ git clone -n https://src.fedoraproject.org/rpms/rubygem-capybara.git /var/lib/mock/f38-build-side-42-init-devel-662507-26636/root/chroot_tmpdir/scmroot/rubygem-capybara
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-662507-26636/root/chroot_tmpdir/scmroot/rubygem-capybara'...
$ git fetch origin 8d657e4f2fbb2f387b330dddf33249817c9d2384:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-capybara
 * [new ref]         8d657e4f2fbb2f387b330dddf33249817c9d2384 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d657e4 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild