$ git clone -n https://src.fedoraproject.org/rpms/jakarta-mail.git /var/lib/mock/f40-build-2345926-59981/root/chroot_tmpdir/scmroot/jakarta-mail
Cloning into '/var/lib/mock/f40-build-2345926-59981/root/chroot_tmpdir/scmroot/jakarta-mail'...
$ git fetch origin 277f3a8c7da1643d15e73a8eebffb3f1524cb985:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jakarta-mail
 * [new ref]         277f3a8c7da1643d15e73a8eebffb3f1524cb985 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 277f3a8 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild