$ git clone -n https://src.fedoraproject.org/rpms/libidn1.34.git /var/lib/mock/f40-build-784867-133654/root/chroot_tmpdir/scmroot/libidn1.34
Cloning into '/var/lib/mock/f40-build-784867-133654/root/chroot_tmpdir/scmroot/libidn1.34'...
$ git fetch origin d5badeaed645cc1b713a0a8f15ea40a7fd62b88a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libidn1.34
 * [new ref]         d5badeaed645cc1b713a0a8f15ea40a7fd62b88a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d5badea Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild